Mixing-faucet.



W. L. ROSS & D. C. TOLLINGBR.

@L L. TOLLINGLR, ADMINISTLATRIX or D. 0. TOLLINGLR, DLG'D.

MIXING FAUGET. APPLICATION FILED JULY so, 190s.

Patented Feb. 15, 1910.

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` IVI 0 tnvrrnn enteras ramena ernten] WILLIAM L. ROSS AND DAVID C. TOLLINGER, OF PHILADELPHIA, PENNSYLVANIA; GERTRUDE L. TOILINGER, ADMINISTRATRIX F SAID DAVID TGIALINGER,

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MIXING-FAUGET.

spcification or Letters raient,

Patented. Feb. 15, 1910.

Application tiled July 30, 1908. Serial No. 446,036.

To all whom it may concern: Be it known that we, WILLIAM L. Ross and DAVID C. ToLLINcEn, in the county of Philadelphia and State of Pennsylvania,have invented certain new and useful Improvements in Mixing-Faucets, whereof the following is a specification, reference being had to the accompanying drawings.

Our invention relates to mixing faucets by which two liquids maybe simultaneously discharged through a common aperture in any desired proportions, or either one discharged alone, or both shut ed.

It concerns more particularly certain improvements in mixing faucets of the type for which we have already secured United States Letters Patent No. 736,023, dated August 11th, 1903, and No. 796,252, dated August 1st, 1905, having particular relationto an improved construction of the mixing chamber; the use of a special distributing collar; the alinement Aof the charge pipesythe more perfect control and regulation of the mixing valve; and the means employed for closing the valve chamber.

|VVe have illustrated our invention `and will describe it as especially designed for regulating the admission of hot and cold water in any desired proportions to a bath or shower.

In the accompanying drawings, Figure I,

is an axial section of a mixlng faucet embodying our invention. Fig. II, is a cross section taken along the line II, II, of Fig. I. Fig. III, is an axial section taken along the lines III, III, of Fig. II. Fig. IV, V and VI, are detailed 'perspective views respectively of the valve,gmixing collar and the facing disk, the mixing collar of Fig. V being shown in an inverted position.

In said figures l, is the base of the faucet, containing two iiuid chambers 2, 3, separated from each other by a central partition 4. The chamber 2, communicates by the elbow 5, with one of the supply pipes, for example the hot water supply, a coupling 0, being 1nterposed, which 1s provided with a check valve 7, by which reflex flow due to overpressure in the other pipe, is prevented. The chamber 3. similarl communicates by the elbow 8, with the other feed pipe, (say cold water), with the similar interposition of a of Philadelphia, v

with a stufhng box 16,

coupling 9, also provided with a check valve 7 Above the base vof the faucet is formed the valve seat 10, the upper surface of which is provided with a faclng disk 11, of suitable resilient-material. Piercing the valve seat and its facing disk is a circular aperture 12, communicating with the hot water chamber, and a circular aperture 13, communicating with the cold water chamber, the two apertures being diametrically 4opposite with relation to the axial line of the valve side 'of the faucet base is formed integrally the extended collar 14, which forms the valve casing. This casing is closed by an internally threaded top 15, screwed upon the externally threaded outer edge ofthe casing, and provided centrally for the reception of the valve stem v17, which carries ythe valve vdisk, 18. rI`his valve disk is replaceable and rests closely upon the facing disk 11, of the valve seat.A It. is pierced by two circular apertures 19, and 20, placed as shown in the .valve-` Upon i Figs.y II, and IV, from which it will be ob- Y served that when one of them is in full registry with its correspondin aperture in the valve seat, the periphery of the other'isappreaching its corresponding aperture in 'the valve seat, soA that -in proportion as rotation of the valve tends te close the hot water a' erture 12, will the cold water aperture 13, e opened, 'and vice versa.

Upon the upper surface` of the rotary valve disk are two shallow cam inclines 21, 21, formed on opposite sides of the axis of the valve. These cam inclines however do not reach tothe edge Yof `the valve disk, leaving around said edge an annular bearing surface 22. Within the valve casing rests a mixing collar 25, forming a separate and replaceablepiece, and best shown in the perspective view of Fig. V. This mixing collar is provided upon its lower edge with two downwardly projecting lugs 26, 26, which project be ow the lower surface of the valve disk, and enter peripheral notches 27, 27, of the resilient facing of the valve lseat, whereby the facing is maintained with fits openings in exact registr with those of the valve seat by reason of tie fact that the mixing collar is provided with opposing keys 28, 28, entering key ways 29, 29, formed in the inner wall of the valve casing. The

mixing collar is further provided with projections 30, 30, having formed on their lower edge cam inclines 31, 31, corresponding to and coperating with the cam-inclines 21, 21, upon the upper surface of the valve disk. The lower edge of the mixing collar has a seat 33, formed just below the cam-inclines, and forming a bearing surface which bears against the corresponding bearing surface 22, on the upper surface of the valve disk.

The upper edge ofthe mixing collartis pro-' as the two feed ipes. The mixing collar.

when seated wit in che valvecasing, is

' driven into lace by the annular cap 40, the

periphery of which is threaded to engagean t internal thread upon the inner edge vofthe valve casing. -As this cap is screwed into place the mixing collar is driven'down so that its lugs 26, properly engal e ythe resilient facing of the valve seat, an at the same time its bearing surface 33, pressing against the correspondlng bearing surface 22, of the valve disk forces the disk againstthe faclng with whatever pressure maybe desired to maintain the requisite tightness of theovalve.

The ressure thus'exerted, it will be vobserve is quite independent of any' additional pressure exerte u on the diskby virtue 'of the engagement '0 the cam inclines of the disk with the-corres onding cam in# clines of the mixing col ar wh1ch"- occurs upon rotation ofthe valve and which tends to drive thevalve disk even moreheavily against its seat. The annular cap 40, does not however close the valve chamber byrea- `son of the fact that its central aperture is much larger than that of the valve stem, the closure of thefchamber being effected by the top 15. It will, therefore, be seen that in assembling the valve members, the pressure with which the valve disk is initially set to rotate upon its seat is quite independent of the closure of the valve chamber, as is likewise any subsequent adjustment of its pres- Sure.

In operation the hot and cold water pass through the apertures 12, and 13, of the valve seat as permitted by the registration therewith of the openings in the valve disk, and in such proportions enter the valve chamber within the mixing collar by which ythey are mixed and distributed radially through the notches 35, in all directions,

collar, which is in turn dependent upon the screw cap 40; but asthe valve seat further rotates to close both apertures, the cam inclines upon the upper surface of the valve seat copelate with those upon the mixing collar, exerting further pressure to seat the valve against the facing disk, so that when the posltion of complete closure is reached the sealing of the valve is very tight.

Upon the protruding end of the valve stem is a polygonal extremity carrying the handle v50, held in place by the nut 51. This handle may conveniently be provided with an index point 52, while surrounding the valve casing isa-n annular plate 53, upon which suitable words or letters may be cast to indicate the varying functions of the valve, according to position,as read by the relation of the linger to these words or letters. Since these words or letters are or dinarily cast in advance upon the plate and since their proper position would ordinarily depend upon which of the feed pipes is connected to hot water and which to cold water, it becomes important at times to provide for/ the' reversal of this arran ement without `either an inversion of the faucet or of the position of the feed pipes, and it will be observed that the position of the respective apertures in the valve disk according to our invention is such that a precise inversion of theoperation of the valve can be secured by a :semi-rotation of the valve so that by this half rotation with a corresponding inversion of the position of the handle, the reading of the finger of the handle against the plate will be correct notwithstanding that the osition of the feed pipes has been reverse-c.

By arranging the feed pipes and the exit pipe all in the plane of the faucet base, the faucet and its connections fit conveniently against a wall. The fact that the base with its -two feeds and the valve casing and its exit orifice are all formed integrally prevents any disturbance of the ad'ustmeut of the valve parts or any leakage dueto forcing or straining of the pipes when putting them in place. j

Itlwill be noticed that the parts of our faucet which are subject to wear are the fac ing disk for the seat, the valve disk with its stem, the mixing collar and the' stutiing box. All of these'are independent and readily replaceable parts.

pressure of the mixing valve upon its seat.`

2. In a mixin faucet, the combina-tion of the complete va ve casing containlng within itself as separate and replaceable parts, a rotary diskvalve, l facing disk for the valve seat, and' a collar by the adjustment of which on the side of the valve opposite the4 seat, the valve is pressed against 1ts seat.

3. In a mixing faucet, the combination of the valve casing containin a facing disk, a rotary disk valve, and a co4 ar, the latter being keyed within the casingand provided with one or more lugs engaging the facing disk and holding it from rotation,

4. 'Ina mixing faucet, the combination of the valve casing containing a valve seat, a rotarydisk valve, and a mixing `collar provided with numerous apertures of a size to leave an annular space surrounding it between its outer periphery and the inside of the valve casing.

Y 5. In a 'mlxing faucet, a rotary disk valve with two apertures, and two cam molines 1n alternation 'aroundthe valve stem, a plane bearing'surface near the periphery'of the valve, -and `a collar bearin upon said valve with a plane bearing sur ace in opposition tothe similar surface of the valve, and 'cam inclines upon said collar, which in the lposition offclosure of the valve are in coperation with its cam inclines.

In testimony whereof, I have hereunto signed my name, at Philadelphia, .Pennsyl- Vania, thls 24th day of July 1908.

. WILLIAM L. ROSS. Witnesses:

JAMES H. BELL, E. L. FULLERTON.

In testimony whereof, I have hereunto signed my name, at Stewartstown, York co. Pa. this 27th day of Jul 1908.

y DAVID TOLLINGER.

Witnesses:

W. R. S. ANsTINE, SAMUEL T. EsMAY. 

